Actually, guns are also quite underrated in Medieval Fantasy genre. I'm not saying that that we should see knights wielding AR-15 to battle more, but at least we should see more early guns like a Fire Lances, Hand Cannons, etc.
I watched one of Skallagrim's video over on YouTube about bow as melee weapon and while I scrolled down in the comments, I've found a link to a translation of a recount of a Spanish expedition on the New World.
According to the comment, one of the Conquistadors were facing an archer in melee...
Krita (good brush engine and svg support) or use Blender's Grease Pencil (3D software with surprisingly good 2D capabilities.
I spoke as a beginner hobbyist, but I think a professional could see the merits. Also, both of them are free.